Charles raleigh



(No Model.)

, G. RALEIGH.'

STAM? BATTERY.

No. 551,448. Patented Deo. 17, 1895.

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PATENT CILXRIES RALEIGH, OF JGI'IANNESBURG, SOUTH AFRICAN REPUBLIC.

SPECIFICATION forming part of Letters Patent N o. 551,448, datedDecember 17', 1895.

Application filed Tune 25, 1892. Serial No. 438,051

(No model.) Patented in England February 19, 1892, No. 3,289; in

India April 5,1892, No. 88; in Victoria A pril 6, 1892, No. 9,558; inNew South Wales April 8, 1892,1To. 3,693,I in QueenslandApri112,1892,No.2,048; in New Zealand April 22,1892,No. 5,522, andinCanada July 27, 1892,11'0, 39,471.

To @ZZ whom, it may concern,.-

Be it known that l, CHARLEs RALEIGH, a subject of the Queen of GreatBritain and Ireland, residing' at Johannesburg, in the South AfricanRepublic, have invent-ed new and useful Improvements in or Applicable toStamp-Batteries, (in respect whereof I have obtained Letters Patent inGreat Britain, No. 8,289, dat-ed February 19, 1892; in India, No. 88,dated April 5, 1892; in Victoria, No. 9,558, dated April G, 1892; in NewSouth lVales, N o. 3,693, dated April 8, 1892 in Queensland, No. 2,918,dated April 12, 1892; in N ew Zealand, No. 5,522, dated April 22, 1892,and in Canada, No. 89,471, dated July 27, 1892,) oi' which thefollowing' is a specification.

This invention relates to stamp-batteries for crushing` gold ores andother substances; and it consists in certain improvements in theapparatus :for working the stamps.

In the accompanying drawings, Figure 1 is a front elevation of the upperpart of a stampbattery constructed according to my invention. Fig, 2 isa side elevation of the canishaft and cams, Fig. being a side elevationof one of the cams.

Stamp-batteries or crushing-mills usually comprise a mortar-boxcontaining a number of stamps, (frequently iive,) which are lifted,rotated and dropped by an equal number of cams, either single or doublearmed, keyed on a revolving cani-shaft, the stamps all rotatin3 in thesaine direction. The ore or substance to be crushed is fed in at theback of the stamps, and, in the process of being' crushed, travels fromthe bacl; to the front of the niortar-box. On account of the stamps allrotating` in the same direction, the ore or other substance is driventoward one end of the mortarebox, its passage from the inlet to theoutlet being thereby impeded. Owing to the same cause, the journals i'nwhich the stems work become worn unequally,'and the end 'thrust on thecam-shaft is in one direction only, instead of being alternatelyin eachdirection or counteract-ed.

ln order to insure the ore or other substance remaining` properlydistributed in the mortar-box during the process of crushing, and tocause the wear to take place evenly on the various bearing-surfaces, Imake the stamps rotate first in one direction and then in the other.

Two separate cams may be placed between cach pair of stamps; or acompound cam, (consisting` of two single-armed cams cast together sideby side in one piece,) which, when mounted between two stamps, willcause the stamps to revolve iirst in one direction and then in theother, may be used` The stems 1, 2, 3, 4, and 5 pertaining tothe livestamps are each provided with one of the tappets A, B, C, D, and E. Thetappets B, C, and D are each acted upon by compound cams having twoarms, the tappets A and ll being' each acted upon by one arm of a doublecam and by a single cam.

The action of the parts at each revolution of the cani-shaft F is asfollows: The cani a, having imparted a rotary motion from left to rightto the tappet A and raised it into the highest position, slides off thattappet and allows the first stamp to fall on the material in themortar-box. The arm d of the compound cani d c', having acted in likemanner on the tappetl), then releases the fourth stamp. The arm b of thecam b d then drops the second stamp, the arm e of the cani e df' theiifth stamp, and the arm c oi' the cani c h the third stamp. The arm aof the cani h c", having imparted a rotary motion from right to left t0the tappet A of the first stamp, drops that stamp. The arm d' of the came d', having acted in like manner on the tappet l), then releases thefourth stamp; the arm b' of the cam c b", the second sta-nip; the came', the iiftli stamp, and the arin c' of the cam d c the third stamp.Thus the order of fall is 1 i 2 5 3, and each stamp is dropped twice andturned in both directions at every revolution of the canisliaft F. Itwill thus be seen that the cam c and the arms d, I), e, and c turn thestamps successively from left to right, the arms d', d', and Z1 the canie', and the arm c' thereupon coming into operation and turning thestamps successively from right to left.

That I claim as my invention, and desire to secure by Letters Patent,is-- 1. In a stamp-battery or crushing mill, the combination, with astamp-stem and a tappet mounted thereon, of a cam on one side the steinfor engaging with the tappet so as to lift,

IOO

2. In a stamp-battery or crushing mill, the

eombination, with a series of stamp-sterns 1, 2, 3, 4, 5 provided Withtappets A, B, C, D, E, of a earn a on one side the stern l for Aengagingwith the tappet A Aso Vas to lift, turn from left to right and drop thatstem, a Cain or arm a on the other side said stem for engaging with saidtappet so as 'to lift, turn from right to left and drop the said stem,'a Cain-or arni'b on one side the stern 2 vforengaging with the tappet Bso as l'to lift, turn from left ltorig'htiand drop that stem, a @amorfarni b' on ythe vother side said Stem forengagging with said tappetso as to lift, turn from vright lto-left and drop the said stem, a ealnor arm c on oneside the stem'for en gaging with the `tappet 3@solas 'tolift, yturn-from left to right and 'drop that stem, 'a 'cam or arm c onthe other sidesaid stem forengaging` With said tappet so 'as Ito lift,turn from rightto 'left and drop the'said ste1n,a LGain'or arnid on oneIside ythestern 4 for engaging with the tappet D so as -toflif-t, turn'from left to rightand drop that'stein, a @am orarm d on the othersidesaid'stein for engaging With said tappet so as to lift, turn 4'fromright to left and drop Ithe said stem, a earn or arm e on'o'ne side thestem fffor 'engaging with the tappet E so as to lift, turn from left toright and drop that stem, and a earn e on the other side said stem forengaging with said tappet so as to lift7 turn from right to left anddrop the said stein, whereby the more regular distribution in themortar-box of the ore or suhstarnee to be crushed is attained and theWear on the Various hearing surfaces more evenly divided, substantiallyas herein set forth.

3. In a'stainp-hattery or crushing mill, the combination, with aseriesof Vertieal'stainp stems l, 2, 3, 4, 5 provided with tappets A, B,C, D, E, 'of a horizontal cam-shaft F parallel With the row ofstamp-stems and carrying a single @am a onjthe o'nterside of the stem 1,a double-Carafa bbe'tween the stems 1 and 2, a'douhleeani b fc bet-Weenthe stems 2 and 3, a ld'on'hle @am c d 'between the stems 3 and 4,af'doublefeanilcl "e'fhetweenth'e stems 4C and 5, an'dlasingle'eam'eonth e'outer side ofthe stem 5, the cainsso `actingonthetappets that-'each stamp -is dropped ktwice land turned in bothdirections at every revolution vof lthe eamshaft, whereby'ithemorelregulardistribution in the mortar-box of 'the ore or suhstalnoetohe-o1f-nshed lis'atta-inedand 'the 'Wear 1on the Var-ionsbeari'ngrsuria'ees -inoreeven'ly divided substantially `as yherein setonth.

RALEIGH. Witnesses:

lRAiPsoN, P. VAnNAfL-s.

